DEVICE AND METHOD FOR MEASURING ROTATIONAL BALANCE OF HIGH-SPEED ROTOR

PROBLEM TO BE SOLVED: To provide a device and method for measuring the rotational balance of a high-speed rotor, capable of accurately detecting the angle of a corrected part with a little angle detection lag and an angle and acceleration phase lag even when the rotational speed exceeds 300,000 rpm and substantially free from malfunction due to paint peel-off and the like. SOLUTION: The device of measuring the rotational balance of the high-speed rotor includes a rotation support 12 for rotatably supporting the high-speed rotor 1 having a rotation shaft 2 whose end 2a is divided into two and magnetized to have N and S poles, an acceleration sensor 14 for detecting acceleration of the rotation support 12, a magnetometric sensor 16 provided near the shaft end surface to output sine and cosine wave signals according to the rotation of the rotation shaft, a rotation angle detector 18 for calculating the rotation angle of the rotation shaft from the sine and cosine wave signals, and a processing unit 20 for calculating the quantity of high-speed balance correction and its angle from the detected acceleration and the rotation angle. COPYRIGHT: (C)2009,JPO&INPIT